层间结合状态对沥青路面疲劳性能的影响

The Influence of the Interlayer Bonding State on the Fatigue Performance of Asphalt Pavement

为了分析层间结合状态对沥青路面疲劳性能的影响,从实际路面的层间状态演化过程出发,利用数值模拟软件,计算分析层间结合状态改变后沥青面层层底拉应力的变化规律,并分析了层间状态劣化后路面疲劳性能的衰减机理。结果表明,随着层间结合状态的劣化,沥青面层层底拉应力增加,道路路面结构的整体性下降,沥青路面疲劳性能不断衰减。研究结果可为完善道路设计提供理论依据与参考。

In order to analyze the influence of interlayer bonding state on the fatigue performance of asphalt pavement,this paper starts from the evolution process of interlayer state of actual pavement,calculates and analyzes the change law of tensile stress at the bottom of asphalt pavement layer after the change of interlayer bonding state through numerical simulation software,and analyzes the attenuation mechanism of pavement fatigue performance after the deterioration of interlayer state,With the deterioration of interlayer bonding state,the tensile stress at the bottom of asphalt pavement layer increases,the integrity of the road decreases,and the fatigue performance of asphalt pavement continues to decline.The research results can provide theoretical basis and reference for improving road design.